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Security

Microsoft security updates and public advisory evidence: affected products, fixing updates, exploitation and source coverage.

Security Update Guide CISA KEV
1474Microsoft CVEsreleased Tue 13 Oct 94Critical81 need an update · 13 fixed service-side 1Exploited in the wild
1Publicly disclosed
1In CISA KEV
256Revised since release

September 2026: 998 CVEs · 132 critical · 2 exploited · 2 in CISA KEV

Act first · October 2026

Exploited, KEV-listed, or publicly disclosed
CVE-2026-96951ImportantExploitedCISA KEV · due 16 OctSFBNetwork
Windows Shell Security Feature Bypass Vulnerability
CVSS 8.8 KB5126646KB5126651KB5126653+6
Patch next · critical, "exploitation more likely", or top 5% EPSS · needs an update183
CVSS 8.1 · EPSS 1.4% KB5128895KB5128896KB5128897+1
CVSS 8.1 · EPSS 1.0% KB5126646KB5126651KB5126653+7
CVSS 8.8 · EPSS 2.7% KB5129955KB5129956KB5129957+1
Showing 3 of 183All critical

CVEs · October 2026

262 matches · most urgent first CSVText
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-85331 Windows Device Association Service Information Disclosure VulnerabilityWindows Device Association Service Important 6.51.0%Information DisclosureNetwork
KB5126646KB5126651+7
CVE-2026-85337 Windows Remote Desktop Client Information Disclosure VulnerabilityRemote Desktop Client Important 6.50.9%Information DisclosureNetwork
KB5126646KB5126651+8
CVE-2026-85797 Windows GDI Information Disclosure VulnerabilityWindows GDI Important 6.50.9%Information DisclosureNetwork
KB5126646KB5126651+8
CVE-2026-85821 Windows Universal Disk Format File System Driver (UDFS) Information Disclosure VulnerabilityWindows Universal Disk Format File System Driver (UDFS) Important 6.51.0%Information DisclosureNetwork
KB5126646KB5126651+8
CVE-2026-85840 Windows Event Viewer Information Disclosure VulnerabilityWindows Event Viewer Important 6.51.0%Information DisclosureNetwork
KB5126646KB5126651+8
CVE-2026-85847 Windows Print Spooler Components Information Disclosure VulnerabilityWindows Print Spooler Components Important 6.50.7%Information DisclosureNetwork
KB5126646KB5126651+8
CVE-2026-85932 Microsoft Office SharePoint Information Disclosure VulnerabilityMicrosoft Office SharePoint Important 6.51.2%Information DisclosureNetwork
KB5002927
CVE-2026-88137 WebDAV Information Disclosure VulnerabilityWebDAV Important 6.51.0%Information DisclosureNetwork
KB5126646KB5126651+8
CVE-2026-88151 Microsoft Office Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 6.50.8%Information DisclosureNetwork Revised 10 Nov
—
CVE-2026-88153 Microsoft Office Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 6.50.8%Information DisclosureNetwork
—
CVE-2026-88154 Microsoft Office Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 6.50.9%Information DisclosureNetwork
—
CVE-2026-88167 Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word Important 6.50.9%Information DisclosureNetwork Revised 15 Oct
—

Advisories · October 2026

MSRC guidance without a CVE of its own · 1 advisory
ADV260001
Hardening changes for ReFS volumes on removable mediaStarting with Windows updates released on and after October 13, 2026, Microsoft is making hardening changes to the Resilient File System (ReFS) . This change is not enable by default until 2027. Please see Hardening changes for ReFS volumes on removable media for more information.
Published 13 Oct28 affected products
ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 11 Nov 19:00 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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